{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-38023","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-04-16T04:51:23.977Z","datePublished":"2025-06-18T09:28:29.991Z","dateUpdated":"2026-05-11T21:19:49.179Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T21:19:49.179Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnfs: handle failure of nfs_get_lock_context in unlock path\n\nWhen memory is insufficient, the allocation of nfs_lock_context in\nnfs_get_lock_context() fails and returns -ENOMEM. If we mistakenly treat\nan nfs4_unlockdata structure (whose l_ctx member has been set to -ENOMEM)\nas valid and proceed to execute rpc_run_task(), this will trigger a NULL\npointer dereference in nfs4_locku_prepare. For example:\n\nBUG: kernel NULL pointer dereference, address: 000000000000000c\nPGD 0 P4D 0\nOops: Oops: 0000 [#1] SMP PTI\nCPU: 15 UID: 0 PID: 12 Comm: kworker/u64:0 Not tainted 6.15.0-rc2-dirty #60\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-2.fc40\nWorkqueue: rpciod rpc_async_schedule\nRIP: 0010:nfs4_locku_prepare+0x35/0xc2\nCode: 89 f2 48 89 fd 48 c7 c7 68 69 ef b5 53 48 8b 8e 90 00 00 00 48 89 f3\nRSP: 0018:ffffbbafc006bdb8 EFLAGS: 00010246\nRAX: 000000000000004b RBX: ffff9b964fc1fa00 RCX: 0000000000000000\nRDX: 0000000000000000 RSI: fffffffffffffff4 RDI: ffff9ba53fddbf40\nRBP: ffff9ba539934000 R08: 0000000000000000 R09: ffffbbafc006bc38\nR10: ffffffffb6b689c8 R11: 0000000000000003 R12: ffff9ba539934030\nR13: 0000000000000001 R14: 0000000004248060 R15: ffffffffb56d1c30\nFS: 0000000000000000(0000) GS:ffff9ba5881f0000(0000) knlGS:00000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 000000000000000c CR3: 000000093f244000 CR4: 00000000000006f0\nCall Trace:\n <TASK>\n __rpc_execute+0xbc/0x480\n rpc_async_schedule+0x2f/0x40\n process_one_work+0x232/0x5d0\n worker_thread+0x1da/0x3d0\n ? __pfx_worker_thread+0x10/0x10\n kthread+0x10d/0x240\n ? __pfx_kthread+0x10/0x10\n ret_from_fork+0x34/0x50\n ? __pfx_kthread+0x10/0x10\n ret_from_fork_asm+0x1a/0x30\n </TASK>\nModules linked in:\nCR2: 000000000000000c\n---[ end trace 0000000000000000 ]---\n\nFree the allocated nfs4_unlockdata when nfs_get_lock_context() fails and\nreturn NULL to terminate subsequent rpc_run_task, preventing NULL pointer\ndereference."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/nfs/nfs4proc.c"],"versions":[{"version":"f30cb757f680f965ba8a2e53cb3588052a01aeb5","lessThan":"db6f5ee1fc8f54d079d0751292c2fc2d78e3aad1","status":"affected","versionType":"git"},{"version":"f30cb757f680f965ba8a2e53cb3588052a01aeb5","lessThan":"4c189fd40a09a03f9a900bedb2d9064f1734d72a","status":"affected","versionType":"git"},{"version":"f30cb757f680f965ba8a2e53cb3588052a01aeb5","lessThan":"72f552e00c50f265896d3c19edc6696aa2910081","status":"affected","versionType":"git"},{"version":"f30cb757f680f965ba8a2e53cb3588052a01aeb5","lessThan":"85fb7f8ca5f8c138579fdfc9b97b3083e6077d40","status":"affected","versionType":"git"},{"version":"f30cb757f680f965ba8a2e53cb3588052a01aeb5","lessThan":"a6879a076b98c99c9fe747816fe1c29543442441","status":"affected","versionType":"git"},{"version":"f30cb757f680f965ba8a2e53cb3588052a01aeb5","lessThan":"da824f1271633bcb515ca8084cda3eda4b3ace51","status":"affected","versionType":"git"},{"version":"f30cb757f680f965ba8a2e53cb3588052a01aeb5","lessThan":"f601960af04d2ecb007c928ba153d34051acd9c1","status":"affected","versionType":"git"},{"version":"f30cb757f680f965ba8a2e53cb3588052a01aeb5","lessThan":"c457dc1ec770a22636b473ce5d35614adfe97636","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/nfs/nfs4proc.c"],"versions":[{"version":"4.12","status":"affected"},{"version":"0","lessThan":"4.12","status":"unaffected","versionType":"semver"},{"version":"5.4.294","lessThanOrEqual":"5.4.*","status":"unaffected","versionType":"semver"},{"version":"5.10.238","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.184","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.140","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.92","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.30","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.14.8","lessThanOrEqual":"6.14.*","status":"unaffected","versionType":"semver"},{"version":"6.15","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"5.4.294"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"5.10.238"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"5.15.184"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"6.1.140"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"6.6.92"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"6.12.30"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"6.14.8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"6.15"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/db6f5ee1fc8f54d079d0751292c2fc2d78e3aad1"},{"url":"https://git.kernel.org/stable/c/4c189fd40a09a03f9a900bedb2d9064f1734d72a"},{"url":"https://git.kernel.org/stable/c/72f552e00c50f265896d3c19edc6696aa2910081"},{"url":"https://git.kernel.org/stable/c/85fb7f8ca5f8c138579fdfc9b97b3083e6077d40"},{"url":"https://git.kernel.org/stable/c/a6879a076b98c99c9fe747816fe1c29543442441"},{"url":"https://git.kernel.org/stable/c/da824f1271633bcb515ca8084cda3eda4b3ace51"},{"url":"https://git.kernel.org/stable/c/f601960af04d2ecb007c928ba153d34051acd9c1"},{"url":"https://git.kernel.org/stable/c/c457dc1ec770a22636b473ce5d35614adfe97636"}],"title":"nfs: handle failure of nfs_get_lock_context in unlock path","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"},{"url":"https://lists.debian.org/debian-lts-announce/2025/08/msg00010.html"}],"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2025-11-03T19:58:22.071Z"}}]}}